Less time for invoices, more time for customers
You became a self-employed person to focus on your business, not on invoicing and administrative paperwork. Using OkiOki takes a lot of work off your shoulders. Find out how on this page.
Over 5,000 self-employed people save time and effort with OkiOki.
Your colleagues can complete their invoicing in only a few clicks, significantly simplifying their administrative workflows and ensuring full compliance with Peppol legislation. What do they do with the time saved? They spend it on their business, their customers and themselves.
How do I create an invoice quickly?
Creating invoices and offers is easy:
- You can create them online on your computer or smartphone in just a few clicks.
- You personalise each document with your logo and company colours.
- You add a QR payment code to your invoice, so your customers can pay faster.
As a business manager, you don't want to waste time on administrative workflows. That’s why OkiOki attaches great importance to easy invoicing as a self-employed person with a one-person business.
How do I keep my administrative workflows simple?
You can keep your administration workflows as a self-employed person simple with OkiOki. The app automatically links with:
- Your mailbox
- Your bank account
- Your supplier portals
- And your cloud storage
Invoices, receipts, payments and missing documents are automatically collected at a single location. It couldn't be more convenient for both you and your accountant. Since your accountant also has access to these documents, you no longer need to forward anything.
OkiOki also monitors your payment status.
At a glance, you can see:
- Outstanding payments among customers and what actions you still need to take
- What you still have to pay personally
- What documents are missing for your accountant.
Thanks to OkiOki, you always have a perfect overview, with a minimum of manual administrative work.
What is a good e-invoicing tool for mobile working?
OkiOki lets you work from anywhere. You can use the web application on your computer, laptop or smartphone. And just as important: It offers maximum ease of use on each of these devices.
This invoicing software is perfect for freelancers who work on the go. You create invoices, follow up on tasks, store your documents and keep your records perfectly. Wherever you are.
Incidentally, OkiOki is more than just a practical invoicing program for freelancers. The app also works brilliantly as a virtual assistant, carefully organising all your documents and automatically sending them to your accountant.
Try OkiOki for free
- Create invoices and offers in just a few clicks
- Send e-invoices via Peppol, without any technical knowledge
- Automatically collect your administration as a self-employed person in one place
- Easily track outstanding payments and missing documents
- Work on your computer, laptop or smartphone
- Automatically deliver documents to your accountant
- Perhaps the best invoicing app for freelancers
Frequently asked questions about OkiOki for self-employed persons
What is e-invoicing?
E-invoicing is invoicing with a structured electronic invoice, for example in UBL or XML format.
So it’s not just a PDF. An e-invoice contains data that accounting software can automatically read and process. This speeds up your administrative workflow and reduces the risk of errors. With OkiOki, you can create, send and receive e-invoices via Peppol as a self-employed person, in full compliance with legal requirements.
What is Peppol?
Peppol is an international network that allows companies, governments and organisations to exchange electronic invoices and other documents securely. You can see it as a secure channel between the sender’s and recipient’s software.
With OkiOki, you don't have to arrange anything from a technical perspective. The app connects your company to Peppol and ensures that your invoices are sent and received in the right format.
Do I need Peppol as a self-employed person?
This is indeed the case if you are subject to VAT and invoice other companies in Belgium. Since 1 January 2026, such B2B invoices must be sent as structured e-invoices via Peppol.
Do you only invoice private individuals? In that case, this obligation doesn't apply. With OkiOki, freelancers can get things done quickly without any IT investment or technical knowledge.
How do I send a Peppol invoice?
With OkiOki, you can do this in just a few steps. You create your invoice in OkiOki, the app prepares everything in the right format and sends the e-invoice to your customer via Peppol. OkiOki also checks whether your customer is registered on the Peppol network. So, you don't have to manage UBL files, XML formats or access points.
Can I create online invoices using my smartphone?
Absolutely! With OkiOki, you can create invoices and offers online, both on your computer and on your smartphone. Handy when you’re working on the go, want to create an offer quickly or send an invoice straight away.
You can personalise your documents with your logo and company colours. OkiOki also automatically adds a QR payment code, so your customer can pay more easily - and therefore often faster. And that’s worth its weight in gold for a self-employed person.
Do I need any technical knowledge?
Not at all, OkiOki does all the technical work. The app connects your company to Peppol, prepares your invoice in the right structured format and sends it over the network. So, you don't need to know exactly how UBL, XML or Peppol access points work. You simply create your invoice and OkiOki does the rest.
Can my accountant take a look, too?
OkiOki makes working with your accountant a lot easier. Your invoices, receipts, payment information, tags and comments are automatically forwarded to your accountant’s accounting software. An added bonus: this means you’ll have fewer documents to collect at the end of the quarter. After all, your accountant receives everything in a more organised and structured format.
How quickly can I get started?
You can start using OkiOki right away, simply by creating your account. The software then connects your company to Peppol, where you can create, send and receive e-invoices. Your mailbox, bank account, supplier portals or cloud storage are also linked, so documents are automatically gathered in one place. In one go, your administrative workflow becomes much simpler and better organised.
How do I keep track of outstanding invoices?
OkiOki automatically tracks the payment status of your purchase and sales invoices. Your dashboard and to-do list show which customers still have to pay you, which invoices you still have to pay and which documents are missing. The connection to your bank account links payments to invoices. This allows you to automatically maintain a complete overview without having to check everything manually.